Enhancing rice – rice system productivity through site-specific nutrient management using decision support tools
DOI:
https://doi.org/10.59797/ija.v70.i4.5672Keywords:
Decision Support Tool, Leaf Colour Chart, Nutrient Expert, Rice, Site Specific Nutrient ManagementAbstract
The use of decision support tools (DST) for capturing the site-specific information is important for developing NPK recommendation. To understand the performance of rice (Oryza sativa L.) under different fertilizer management practices based on DST under rice – rice cropping system, a researcher-managed trial (kharif 2019 to boro 2020-21) was conducted at Regional Research Sub-Station (NAZ), BCKV, Chakdaha, West Bengal. Application of SSNMNE significantly increased all measured growth parameters and yield components of rice over other treatments in all the four seasons. The same treatment also resulted in significantly higher seed and straw yield (16.67 and 2.42% more than the values in FFP treatment respectively in kharif season, while 8.51 and 0.45% more than the values in FFP treatment respectively in boro season). System production efficiency was also highest with SSNMNE. Net return, B:C ratio and system economic efficiency were also highest with SSNMNE treatment. The NR and B:C ratio obtained in SSNMNE treatment were 30.7% and 17% higher than that of FFP treatment respectively in kharif season, while 13.6% and 12.1% higher than that of FFP treatment respectively in boro season. The SEE obtained in SSNMNE treatment was also 18.5% higher than that of FFP treatment. Hence, superiority of SSNMNE treatment was proved over others in augmenting rice – rice system productivity in lower Gangetic plains of West Bengal.
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